GROWTH AND OPTICAL PROPERTIES OF Nd-DOPED Bi4Ge3O12 SINGLE CRYSTALS

초록

Single crystals of Bi4Ge3O12(BGO) doped with rare earth elements such as Nd is of practical interest because of its potential use as laser materials. The Nd-doped BGO has a broader absorption the pump light of a diode laser more efficiently. In this work, the Nd-doped BGO crystals were grown in the auto-diameter control system equipped with frequency weighing sensor by the Czochralski method. The Nd doping level was varied from 1 to 3 at.%. The optimum grown conditions, under O2 atmosphere, of the single crystals were as follows: